CVE-2021-3572

Publication date 10 November 2021

Last updated 25 August 2025

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

5.7 · Medium

Score breakdown

Description

A flaw was found in python-pip in the way it handled Unicode separators in git references. A remote attacker could possibly use this issue to install a different revision on a repository. The highest threat from this vulnerability is to data integrity. This is fixed in python-pip version 21.1.

Read the notes from the security team

Status

Package Ubuntu Release Status
python-pip 23.04 lunar
Not affected
22.10 kinetic
Not affected
22.04 LTS jammy
Not affected
21.10 impish
Not affected
21.04 hirsute Ignored end of life
20.10 groovy Ignored end of life
20.04 LTS focal
Not affected
18.04 LTS bionic
Fixed 9.0.1-2.3~ubuntu1.18.04.5+esm2
16.04 LTS xenial
Fixed 8.1.1-2ubuntu0.6+esm2
14.04 LTS trusty
Fixed 1.5.4-1ubuntu4+esm1

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Notes

sbeattie

pip < 10, i.e. pip in bionic and older, parses git references differently, requiring a more significant backport

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
python-pip

Severity score breakdown

Parameter Value
Base score 5.7 · Medium
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N

References

Related Ubuntu Security Notices (USN)

Other references